| 研究実績の概要 |
I finished an ongoing research project, directly addressing the goals of the grant project, cosmic evolution of the supermassive black hole population, on studying the active BH mass and accretion rate function and its evolution out to z～2, utilizing AGN samples in the COSMOS, VVDS and SDSS. This work was published in FY2014. The study established these distribution functions down to the typical mass and accretion rate regime, and revealed BH mass as the main driver of the well known AGN downsizing trend, seen the AGN luminosity function.
I contributed as a co-author to 3 papers, which studied the demographics of the AGN population in context to their host galaxies, their dark matter halos and their co-evolution.
As described in the research plan, I analyzed near-IR spectroscopic data from FMOS of AGN in the COSMOS field. I modeled the Halpha and Hbeta emission line regions, investigated the broad and narrow emission line properties and compiled a black hole mass catalog. The analysis is ongoing and a paper is in preparation, to be published in FY2015.
I successfully applied for observing time with Subaru/HSC to obtain deep imaging of the HETDEX main field, with 1 night allocated in S15A in May. This imaging is essential for the HETDEX main goal, namely the cosmology, but also for the AGN study I plan to carry out. In this context, I established a new collaboration between the HETDEX team and the Japanese community, with Masami Ouchi (ICRR, UTokyo) and his group, who will together with myself be responsible for obtaining, reducing and analyzing the HSC imaging data.
|
| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
I published an important paper on the growth and demographics of the active black hole population, based on the COSMOS sample, which will also lead the path for demographic AGN studies within HETDEX and beyond. I have analyzed the FMOS data as outlined in the proposal. A publication on the broad line properties is in preparation and we currently carry out the analysis of the narrow line properties.
Due to technical issues of the HETDEX survey itself, we could not start work on these data. We therefore started another project, studying the z～1.4 population of LoBAL QSOs.
|
| 今後の研究の推進方策 |
The start of the HETDEX survey has been delayed by at least one year, compared to the statement in the proposal, due to technical problems in the telescope upgrade. It is now expected to start in mid 2015. The first year dataset will thus only be available in mid-2016. While I will start work on the initial HETDEX data, as outlined in the proposal for FY2014, at the moment I do not expect to achieve a publication on the HETDEX data itself during FY2015.
I will work together with Masami Ouchi and a student on our initiated HSC imaging survey of the HETDEX field. The student will here take the lead on the data reduction and analysis and I will conduct the observation and supervise him together with Ouchi-san.
I will continue and finish the work on the FMOS AGN data set, which will be presented in at least one publication within FY2015.
Furthermore, I started an additional project in the context of the goals of my proposal, by obtaining near-IR spectroscopy of an interesting AGN subclass, LoBAL QSOs at z～1.4. I am currently analyzing the data and expect a publication in FY2015.
|
